refactoring of frontend

app/adapters/application.js

app/components/document.hbs

app/components/document/detailed.hbs

app/components/documents.js

app/components/documents/filter.js

app/components/jumbo.hbs

app/components/nav-bar.hbs

app/models/document.js

app/models/folder.js

app/models/node.js

app/router.js

app/routes/document.js

app/routes/folder.js

app/routes/index.js

app/serializers/application.js

app/styles/app.css

app/templates/about.hbs

app/templates/automates/add.hbs

app/templates/automates/automate.hbs

app/templates/automates/index.hbs